'Proboscis monkey' definitions:

Definition of 'proboscis monkey'

noun

Borneo monkey having a long bulbous nose [syn: proboscis monkey, Nasalis larvatus]

From: GCIDE

Proboscis \Pro*bos"cis\, n.; pl. Proboscides. [L. fr. Gr. ?; ? before + ? to feed, graze.]
1. (Zool.) A hollow organ or tube attached to the head, or connected with the mouth, of various animals, and generally used in taking food or drink; a snout; a trunk. [1913 Webster]
Note: The proboscis of an elephant is a flexible muscular elongation of the nose. The proboscis of insects is usually a chitinous tube formed by the modified maxill[ae], or by the labium. See Illusts. of Hemiptera and Lepidoptera. [1913 Webster]
2. (Zool.) By extension, applied to various tubelike mouth organs of the lower animals that can be everted or protruded. [1913 Webster]
Note: The proboscis of annelids and of mollusks is usually a portion of the pharynx that can be everted or protruded. That of nemerteans is a special long internal organ, not connected with the mouth, and not used in feeding, but capable of being protruded from a pore in the head. See Illust. in Appendix. [1913 Webster]
3. The nose. [Jocose] [1913 Webster]
Proboscis monkey. (Zool.) See Kahau. [1913 Webster]

From: GCIDE

Kahau \Ka*hau"\, n. [Native name, from its cry.] (Zool.) A long-nosed monkey (Nasalis larvatus, formerly Semnopithecus nasalis), native of Borneo. The general color of the body is bright chestnut, with the under parts, shoulders, and sides of the head, golden yellow, and the top of the head and upper part of the back brown. Called also proboscis monkey. It is now an endangered species. [Written also kaha.] [1913 Webster +PJC]